The link between speaker-specific accuracy in speech production and listener-specific acuity in speech perception: From subphonemic cue-weighting to prosodic categories

语音产生与发音机制有关，以产生声学语音输出，而语音感知则研究发音设置和声学变化的差异如何有助于建立一个强大的感知结构。然而，目前有稀疏的研究之间的直接联系的发音准确性的发言者一方面和敏锐的言语感知的听众，另一方面。一个有趣的研究问题产生了更密切的审查，这种生产感知联系：（1）是否可以找到一个准确性/敏锐度的联系，以及为个别发言者/听众，即是一个发言者，产生更准确和更少的变化语音生产目标也符合也提高了语音感知技能的听众？反之亦然，（2）具有明确和狭窄感知边界的听者是否也是具有较少变量和更精确发音位置的说话者？如果从个体的角度来研究说话者/听者之间的差异，（3）某些个体的个性特征和频谱差异是否会影响生产的准确性和/或区分语音的感知敏锐度？最后，如果从跨人群或跨语言的角度来看，（4）我们是否可以定义某些群体的说话者/听者在他们的产生和感知策略中只使用某些声学线索或不同线索的组合，或者在不同的人群/语言中存在单一的主要策略来实现一定的产生/感知对比？该项目的总体目标是阐明不同语言和不同人群的语音产生和语音感知如何通过其边界条件联系起来，即（1）产生语音的发音要求和（2）这些发音要求的声学后果。这一目标将通过检查在语音中发现的不同声学线索来实现，并将这些发现与跨越几个语音片段（如音节或单词）的线索进行对比，以得出（1）语音产生的准确性增加也会导致感知敏锐度增加，以及（2）声学差异对产生强大的感知对比起着什么作用，换句话说：什么形成了语音/音位类别？这项工作将推进我们的理解如何语音生产和感知的联系，即声学线索和/或发音设置的配置结果在一个最佳的感知输出。这项工作的潜在应用是超声视频优化发音和/或声学设置，帮助语音语言治疗师找到最佳的治疗方法，为给定的语音障碍。此外，该程序的输出将有助于优化人工耳蜗植入，从而使听力受损患者受益。

Speech production is concerned with the articulatory mechanisms to produce an acoustic speech output, whereas speech perception examines how differences in articulatory settings and acoustic variation contribute to a robust perceptual construct. However, currently there is sparse research on the direct connection between the articulatory accuracy of a speaker on the one hand and the acuity of speech perception of a listener, on the other hand. A number of interesting research questions arise from a closer examination of this production-perception link: (1) can an accuracy/acuity link be found for individual speakers/listeners as well, i.e. is a speaker that produces more accurate and less variable speech production targets also coincides also a listener with improved speech perception skills? And vice versa, (2) are listeners with well-defined and narrow perception boundaries also speakers with less variable and more precise places of articulation? And if examining differences between speakers/listeners from an individual point of view, (3) do certain individual personality traits and spectrum differences influence production accuracy and/or the perceptual acuity to distinguish speech sounds? Finally, if seen from a cross-population or cross-linguistic perspective, (4) can we define certain groups of speakers/listeners who would use only certain acoustic cues or a combination of different cues in their production and perception strategies, or is there rather a single major strategy across different populations/languages to achieve a certain production/perception contrast? The overarching goal of this project is to elucidate how speech production and speech perception in different languages and different populations are linked through their boundary conditions, namely (1) the articulatory requirements to produce speech and (2) the acoustic consequences of these articulatory requirements. This goal will be reached by examining different acoustic cues found within speech sounds and contrast these findings with cues that span several speech segments like syllables or words to elicit if (1) increased accuracy in the production of speech also leads to increased perceptual acuity and (2) what role acoustic variance plays for the generation of robust perceptual contrasts, in other words: what forms a phonetic/phonological category? This work will advance our understanding how speech production and perception are linked, i.e. which configuration of acoustic cues and/or articulatory settings results in an optimal perceptual output. Potential applications of this work are ultrasound videos with optimized articulatory and/or acoustic settings that help Speech-Language therapists to find the best therapy approach for a given speech sound disorder. Furthermore, the output of this program will help optimizing cochlear implants and thus benefit hearing-impaired patients.